D transform faults there are several transform faults

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Basic Blueprint Reading and Sketching
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Chapter 4 / Exercise 12
Basic Blueprint Reading and Sketching
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4 “Geoworld” Plate Tectonics Lab D. Transform Faults There are several transform faults in the Elrond Sea. The only parts of these faults that are presently active are the parts between the segments of the Hobbit Ridge. 1. Using arrows, show the sense of motion on each of the active transform faults on the map. 2. In the space below, draw a diagram and explain why the sense of motion on a transform fault is the way it is. E. Earthquakes 1. Describe three places on the planet of Geoworld where you would expect large numbers of earthquakes. a. b. c. 2. The vast majority of earthquakes are caused by movement on faults. What types of faults would you expect at each location you described above (thrust, normal, strike- slip)? a. b. c. 3. For each location described above, record whether the earthquakes will have deep foci and/or shallow foci. a. b. c.
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Basic Blueprint Reading and Sketching
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Chapter 4 / Exercise 12
Basic Blueprint Reading and Sketching
Olivo
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“Geoworld” Plate Tectonics Lab 5 F. The Origin of the Volcanic Islands 1. The Galadriel Islands, Gandalf Islands and Gollum Island are all made of volcanic rocks. What are the difference in tectonic origin among these three groups of islands? 2. What type of volcanic rock would you expect Gollum Island to be composed of and why? G. Hot-spots and Absolute Movement Rates 1. Absolute motion of the Aragorn Ocean and the Bilbo Continent Notice the Gandalf Islands. They are analogous to the Hawaiian Islands on Earth. They form a linear chain that originated by the migration of the plate over a mantle hot spot. Mantle hot spots are assumed to be fixed relative to the center of the planet . All of the Gandalf islands are volcanic in origin but the easternmost and largest island--which is sitting directly over the hot spot--is the only one with active volcanoes on it. The rocks on the westernmost island have been dated by radiometric methods at 32 m.y . Measure the distance between the centers of the westernmost and easternmost Gandalf islands and use this information to calculate the absolute movement rate (in mm/y) of the Aragorn Ocean (and the Bilbo Continent, which is connected to it). Show your equations and explain where you got each of your numbers . Helpful hint: Pay no attention to the magnetic anomalies when answering this question.
6 “Geoworld” Plate Tectonics Lab Absolute movement rate of the Aragorn Ocean = ____ mm/y 2. From careful measurements taken by satellites, we know that the Sauron Trench and the Galadriel Islands are fixed in position. At what speed (in mm/y) is the Bilbo Continent moving toward the Galadriel Islands?

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